Spraying device



W. J. LYNCH SPRAYING DEVICE March 1, 1932.

Filed Nov. 2S, 1929 Patented Mar. l, 1932 rarest gerica WILLAM `il. LYNCH, F BUFFALO, NEW YORK SPRAYING- DEVICE Application led November 26, 1929. Serial No. 409,951.

This invention relates to nozzle or spray device which is adapted to be supplied with fluid under pressure and to eject the same in the form of either a mist or a spray, such as is requiredin dishwashing machines, shower baths,V cement and paint guns, milk can cleaners, etc.

The object of the invention is to provide a device of this character which permits of optionally obtaining either a divergent,- vconvergent or straight spray, and also permits of conveniently flushing` out the device whenever suiiioient vdirt or gummy sediment has accu.- mulated as to cause the spray to be irregular in shape or insuiiicient in pressure.

Another object of the invention isk to pro vide a spray device of such character that a plurality of the same may be actuated simultaneously by means of a single control lever.

ln the accompanying drawings:

Figure 1 is a side elevationof the spray device of the type used to spray Awater in a dishwashiim` machine, the same being illustrated as coupled in the pipingv of a Huid pressure line, shown fragmentarily. H

I Figure 2 is a horizontal medial section thereof, taken on line 2-.2 Fig. 1.

Figures 3 and t are vertical transverse sections, taken on correspondingly numbered. lines of Fig. 1.

Figure 5 is a fragmentary section on a re duced scale of a plurality of the spray devices and actuated by one common control lever.

Similar characters of reference indicate like parts in each of the several figures of the sure, said pressure being obtained by any suitable means, for example by the use of a centrifugal pump (not shown).

The central lower part of the said casing is depressed to form the cylindrical spray aforesaid'lower casing,` wall 1'?, the diameter .5 chamber which is formed by the cylindri- 9 of said aperture being somewhat larger than the diameter of said spray head 20. The latter is suitably bored axially to receive a `@guide pin 22 whose upper end is threaded into the internally screw threaded bore of an adjustable thimble or stop bushing- 23. The latter is provided with external screw threads 23 which thread wardly `from the main spray casing 10.

Said spray sle ve 18 with its spray head 20 is adapted to be moved up or down (inwardly or outwardly) upon said guide pin 22. To prevent any dash pot effect or the possibility lof excessive dirt or sediment accumulating in the lower part of the bore of said spray sleeve, a suitable drainage hole 25 is bored diametrically through` the lower part of said sleeve. The upward movement ef said sleeve is limited by its coming into contact with the lower face of the aforesaid stop bushing 23.. The latter may be adjustably screwed up or down in the main spray casing 10 and the upward movement of the spray sleeve 18 thereby adjustably limited, the properly adjusted position of said bushing being rendered thereafter immovable by means of a leek nut 26 which is threaded ente the external into suitable v internal screw. threads formed in a vertical annular flange 24 which is preferably formed integral with and projects axially and up-` spray sleeve.

threads of said adjusting bushing 23 and is adapted t-o bear against the upper face of theannular flange 24 of the main casing. t is desirable to have as much of the aforesaid guide pin 22 projectinto said spray sleeve 18 as possible without having the lower end of said guide pin come into contact any time with the bottom of the bere of said rThis result is obtained by screwing said guide pin 22 up or down in the aforesaid bushing 23 to the desired position and then locking said guide pin in place by means of a set screw 27. rihis adjustment is not affected by the vertical adjusting movement of the adjusting tively to the main casing l0, inasmuch as the guide pin 22 and said adjusting bushing 23, in this case, move up or down as a unit.

Vhen the spray head 2O is vin its central position with reference to the spray aperture 21 (as shown in full lines in the drawings) the fluid under pressure in the chamber l0 is forced to flow downwardly between said spray head and said spray erture and issue therefrom in a powerful concent 1ated stream or spray of hollow cylindrical or tubular form, this being the type of spray j oarticuL larly desired when a forcible action of the spray is needed, as in washing milk bottles, milk cans or ice cream cans, or in washing a persons hair when ina shower bath, etc. When the spray head 2O is in its upper position (see upper dotted lines 20a, Fig. 3) the stream or spray of fluid under pressure converges as it issues from the spray device, and this brings the opposite sides of the conical sheet of the fluid into violent contact with each other and causing, as a result of this ii pact, a finely divided mist or line spray, suoli as is particularly desired in the spraying of cement and paint, in air conditioning, and in the less vigorous employment of the shower bath, etc. On the other hand, if the spray head 20 is moved downwardly from its central position the spray is caused to diverge or flare out as it issues from the spray device and is therebyenabled to forcibly cover a large area, this being the condition particularly desired in dish washing, in the ordinary use of shower baths, etc. ln practically all cases where a spray is required, all three of these sprays are useful to some extent at least and even where, in certain installations, any one or two of the sprays are not customarily needed, the construction whereby all three of the sprays may be obtained, when desired, has two distinct advantages.

` The construction of the device may be made inexpensive by reason of its standardized construction which is applicable to a wide variety of uses.

Any dirt or sediment which may accumulate in any one position of the spray head may be quickly and thoroughly flushed out by bushing` 23 itself, rela- ,Y

moving the said head up and down to the other positions of the head.

lVhen the spray head is in its eXtreme upper or extreme lower position and thereby a converging or diverging spray produced respectively, the sheet of fluid which issues as a spray, is prevented from undue dispersion by the beveling at 30 and 3l of the outer edges of the upper and lower faces respectively of the spray head 20. These bevels also reduce the wire drawing of the fluid.

The upper end of the spray sleeve 18 is provided with upper and lower actuating 'flanges 32 and 33 between which is arranged the outer enlarged portions of the arms of a ork lever 34, the movement of which effects l e upor down movement of said spray sleeve 8 and its enlarged spray head 20. The downward movement of said spray head 2O is adjust-ably limited by an adjusting stop screw 'TO which is threaded vertically through the wall of the main casing l() and is adapted to bear with its upper end against the adjacent lower face of the forked lever 34. The outer or enlarged end of said fork lever is secured rigidly by any suitable means, for instance by a taper pin 35 and set screw 36 to operating or control shaft 37 which passes completely through a suitable longitudinal enlargement- 38 of the main casing 10 and is disposed parallel to the fluid pipes 1l and 12. Accessibility to said taper pin 35 (see Fig. 3) is effected by providing upper and lower plug screws 4() and 4l which pass through the casing walls, and accessibility to the set screw 3o` is effected by providing a plug screw 42 which also passes through the walls of said main casing. End shifting of the control shaft is prevented by a pair of antishifting or limiting` collars 43 which bear with their inner faces against the opposite sides of the hub of the fork lever 34. The bores of said collars are arranged to rotatably receive the control shaft 37 and their peripheral faces are provided with external screw threads which engage with suitable internal screw threads 44 formed in the walls of the spray casing enlargement 38 coaXially with the control shaft 37. @ne of the limiting collars 43 may, if desired, be cast integrally with the main spray casing l0. Screw slots 45 are preferably provided on the outer faces of said limiting collars to facilitate their adjustment, andthe collars are held firmly in their adjusted position by means of set screws 46 (Fig. 2). Leakage of the fluid at this point is prevented by the employment of soft packing washers or rings 47 which encircle the control shaft and are pressed against the outer faces of the said limiting collars 43 by means of packing glands 48. The latter are provided on their peripheries with external screw threads which also engage with the aforesaid intering glands 48 screwed in until'a suitable water-tight joint of the soft packingfrings 47 vis effected. Y

It is obvious that the details of constructionmay be varied considerably without departing from the spirit of the invention, the Hparticular type of spraying device illustrated being only one embodiment of the invention as relating more particularly to dish washing machines of the type shown in my Patent No. 1,440,612, issued Jan. 2, 1923. l I claim as my invention: 1. A spraying device comprising a casing supplied by fluid under pressure and having an aperture; a spray head axially movable in said aperture so asto be positioned either cen- I trally,outwardly or inwardly; and adjustable stops to limit the extreineoutward vand inward movements of said head.

21A spraying device comprising a casing supplied by iiuid under. pressure and having ,Y Van aperture; a spray head axially movable in said aperture so as 'to he positioned either centrally, outwardly or inwardly; adjustable stops to limit the extreme outward and inward positions of said head; and means for rholding said head in either its central, in-

ward or outward position.'

Y In testimony whereof l hereby aiiX my signature.

wiLLiAM J.- LYNCH. 

